Differential Equations Trouble

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SUMMARY

This discussion focuses on verifying solutions to differential equations, specifically the equations ty' - y = t^2 with the solution y = 3t + t^2, and y'' + y = sec(t) for 0 < t < π/2 with the solution y = (cos(t))ln(cos(t)) + t sin(t). Participants emphasize the importance of substituting the proposed solutions back into the differential equations to confirm their validity. A common misunderstanding is clarified: when asked to verify a solution, the task is to check if the given function satisfies the equation.

PREREQUISITES
  • Understanding of first-order and second-order differential equations
  • Familiarity with the method of substitution in differential equations
  • Knowledge of trigonometric functions and their properties
  • Basic calculus concepts, including derivatives and integrals
NEXT STEPS
  • Study the method of verifying solutions to differential equations
  • Learn about first-order and second-order differential equations in detail
  • Explore the properties of trigonometric functions in the context of differential equations
  • Practice solving differential equations using substitution techniques
USEFUL FOR

Students studying differential equations, educators teaching calculus, and anyone looking to strengthen their understanding of verifying solutions in mathematical contexts.

TheSpaceGuy
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Homework Statement



Verify that each given function is a solution of the differential equation.
1. ty' - y = t^2 ; y = 3t + t^2

2. y'' + y = sect , 0<t<pi/2 ; y = (cost)ln( cost ) + tsint



The Attempt at a Solution


int (tdy) = int(t^2 + y)dt
which isn't y=3t + t^2

For the second part I'm not sure where to go. Thanks for the help guys.
 
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It just looks like you need to take the given solution and plug it into the differential equation to "test" if it is true.
 
King Tony said:
It just looks like you need to take the given solution and plug it into the differential equation to "test" if it is true.

You are correct sir. I misinterpreted the question it seems. Thanks for the save!
 
When a problem says "verify that such and such is a solution" they are in essence telling you the answer, and just asking for you check it.
 

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